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Old 10-25-2014, 07:11 PM   #22
mid_life_crisis
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Isn't the shorter length of time offset somewhat by the violence of the expansion of fuel under that much pressure being released into an open space? Wouldn't that help with the mixing?

I haven't seen it put as plainly as this (maybe it was stated in technical terms and I missed it) but if you boost this motor you need to add more fuel. If the DI is effectively maxxed out due to restrictions of the mechanical pump, you can only increase the amount of fuel coming through PI. In that case, a boosted engine has to have the ratio shifted a bit towards PI compared to stock, doesn't it?
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